Chains and heterogens:
PDB Chain Sequences:
>2src_ (-) ttfvalydyesrtetdlsfkkgerlqivnntegdwwlahslstgqtgyipsnyvapsdsi qaeewyfgkitrreserlllnaenprgtflvresettkgayclsvsdfdnakglnvkhyk irkldsggfyitsrtqfnslqqlvayyskhadglchrlttvcptskpqtqglakdaweip reslrlevklgqgcfgevwmgtwngttrvaiktlkpgtmspeaflqeaqvmkklrheklv qlyavvseepiyivteymskgslldflkgetgkylrlpqlvdmaaqiasgmayvermnyv hrdlraanilvgenlvckvadfglarliedneytarqgakfpikwtapeaalygrftiks dvwsfgilltelttkgrvpypgmvnrevldqvergyrmpcppecpeslhdlmcqcwrkep eerptfeylqafledyftstepqyqpgenl